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Q. At a grinding wheel has an angular velocity of 27.0 . It has a constant angular acceleration of 26.0 until a circuit breaker trips at time = 1.60 . From then on, it turns through an angle 433 as it coasts to a stop at constant angular acceleration.

Q. A small sphere with a mass of 3.00×10-3 g and carrying a charge of 5.20×10-8 C hangs from a thread near a very large, charged insulating sheet. The charge density on the sheet is -2.30×10-9 C/m2. Find the angle of the thread.

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